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Diffstat (limited to 'manual')
| -rw-r--r-- | manual/math.texi | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/manual/math.texi b/manual/math.texi index 32c5c057e0..e148fd83ba 100644 --- a/manual/math.texi +++ b/manual/math.texi @@ -476,6 +476,20 @@ domain, @code{acospi} signals a domain error. The @code{acospi} functions are from TS 18661-4:2015. @end deftypefun +@deftypefun double atanpi (double @var{x}) +@deftypefunx float atanpif (float @var{x}) +@deftypefunx {long double} atanpil (long double @var{x}) +@deftypefunx _FloatN atanpifN (_Float@var{N} @var{x}) +@deftypefunx _FloatNx atanpifNx (_Float@var{N}x @var{x}) +@standards{TS 18661-4:2015, math.h} +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}} +These functions compute the arctangent of @var{x}, divided by pi. The +result is in the interval between @code{-0.5} and @code{0.5} +(inclusive). + +The @code{atanpi} functions are from TS 18661-4:2015. +@end deftypefun + @cindex inverse complex trigonometric functions @w{ISO C99} defines complex versions of the inverse trig functions. |